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Effect of different types of Medicaid managed care on childhood immunization rates
J J Cotter1, K A McDonald, D A Parker
1Virginia Commonwealth University, USA.
Insights
Medicaid managed care impacts childhood immunization rates. Primary Care Case Management (PCCM) showed higher immunization rates than voluntary and mandatory Health Maintenance Organization (HMO) programs for low-income children.
Area of Science:
- Public Health
- Pediatrics
- Health Services Research
Background:
- Medicaid managed care aims to enhance access to preventive services for low-income children.
- Immunization is a critical preventive service for child health.
Purpose of the Study:
- To compare immunization rates among low-income children enrolled in different Medicaid managed care models.
- To assess the effectiveness of primary care case management (PCCM) versus Health Maintenance Organization (HMO) programs in achieving childhood immunization.
Main Methods:
- A retrospective study analyzing immunization data (3:3:1 series) for 7,356 children enrolled in Medicaid.
- Comparison of immunization rates across three managed care models: PCCM, voluntary HMO, and mandatory HMO.
- Statistical adjustment for covariates including race, urban residence, and gender.
Main Results:
- Immunization rates were highest in PCCM (78%), followed by voluntary HMO (71%), and mandatory HMO (67%).
- Children in voluntary HMOs were less likely to complete the immunization series compared to PCCM (OR=0.75).
- Children in mandatory HMOs showed even lower likelihood of completing the series versus PCCM (OR=0.59).
Conclusions:
- The type of Medicaid managed care program significantly influences childhood immunization rates.
- PCCM models appear more effective in promoting immunization completion for low-income children compared to HMOs.
- Ongoing monitoring of managed care outcomes by Medicaid agencies is crucial for ensuring adequate disease prevention.
Abstract:
Medicaid managed care can improve access to prevention services, such as immunization, for low-income children. The authors studied immunization rates for 7,356 children on Medicaid in three managed care programs: primary care case management (PCCM; n = 4,605), a voluntary HMO program (n = 851), and a mandatory HMO program (n = 1,900). Immunization rates (3:3:1 series) in PCCM (78%) exceeded rates in the voluntary HMO program (71%), which in turn exceeded those in the mandatory HMO program (67%). Adjusting for race, urban residence, and gender, compared to children in PCCM, children in the voluntary HMO program were less likely to complete the 3:3:1 series (OR = 0.75, CI = 0.63, 0.90), and children in the mandatory HMO program were even less likely to complete the series (OR = 0.59, CI = 0.51, 0.68). Results differed by individual HMOs. Monitoring of outcomes for all types of managed care by Medicaid agencies is imperative to assure better disease prevention for low-income children.
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